Answer:
median:23
range: 13
25th percentile: 20
75th percentile: 27
inter quartile Range: 20-27 (I may be wrong)
This problem calls for a simple substitution. We need to substitute 3x in for y in the equation 3x + 2y = 18 and then simplify by combining like terms.
3x + 2y = 18
y = 3x
3x + 2(3x) = 18
3x + 6x = 18
<u>9x = 18</u>
Now, if you want to solve for x, just divide both sides by 9 and simplify:
9x / 9 = 18 / 9
<u>x = 2</u>
Answer: ∠ACB= 60°, ∠DCE= 65°, ∠BCD= 55°
Step-by-step explanation:
1) Since ΔABC is an equilateral, we know ∠ACB= 60°
2) Since we know ΔCDE is an isosceles, we know that ∠DCE= 1/2 (180-50), which is 65°
3) We can add the 2 angles and then subtract them from 180 degrees to get ∠BCD= 55°
1)
Perimeter of figure = 2×(L+b) + πr
=> Perimeter of figure = 2×(18+14) +3.14×7
=> Perimeter of figure = 2×32 + 21.98
=> Perimeter of figure = 64 + 21.98
=> Perimeter of figure = 85.98 cm <em><u>Ans.</u></em>
2)
Perimeter of figure = πrl + πr
=> Perimeter of figure = 3.14×3.5×4 + 3.14×3.5
=> Perimeter of figure = 43.96 + 10.99
=> Perimeter of figure = 54.95 cm <em><u>A</u></em><em><u>ns.</u></em>
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